ShrlAlgoToolkit/WPFluent/Hardware/DpiHelper.cs




using WPFluent.Interop;
using WPFluent.Win32;


namespace WPFluent.Hardware;

/// <summary>
/// Provides access to various DPI-related methods.
/// </summary>
internal static class DpiHelper
{
    /// <summary>
    /// Default DPI value.
    /// </summary>
    internal const int DefaultDpi = 96;

    public static float ScaleX => GetScale().X;
    public static float ScaleY => GetScale().Y;

    private static (float X, float Y) GetScale()
    {
        nint hdc = User32.GetDC(0);
        float scaleX = Gdi32.GetDeviceCaps(hdc, Gdi32.DeviceCap.LOGPIXELSX);
        float scaleY = Gdi32.GetDeviceCaps(hdc, Gdi32.DeviceCap.LOGPIXELSY);
        User32.ReleaseDC(IntPtr.Zero, hdc);
        return new(scaleX / 96f, scaleY / 96f);
    }

}